Is anyone going to wait until 100k miles to replace plugs? Chevy Trailblazer Maintena

I have around 62,000 miles on my 2002 tb and was thinking about changing the plugs sooner rather than later. With gas prices the way they are I would like to make sure that I am getting the most spark for my buck. Even for platinum plugs I would think 100,000 miles is an awful lot.
Has anyone gone 100k? Has anyone changed them sooner?

Pull a plug out and look at it. If it looks like its still in good condition then I would just leave them in. Those plugs are not cheap if you buy GM plugs. I remember when I went to get replacement plugs on a 98 lumina LTZ they were $60 for a set of 6 :shock:

Pull a plug out and look at it. If it looks like its still in good condition then I would just leave them in. Those plugs are not cheap if you buy GM plugs. I remember when I went to get replacement plugs on a 98 lumina LTZ they were $60 for a set of 6 :shock:

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Really? I have a 1998 Lumina as well and i actually got mine for 11 bucks a pair, double platinum and everything, even the dealer was charging only 14 a pair plus install but if you cant install plugs yourself then you should stick to your day job no offence lol. I know it was a pain in the ass to get the ones in the back off but i mean wasnt that bad. next to like an oil filter whats cheaper than sparkplugs? lol i knwo lots of stuff.

With modern OBDII systems, misfires are detected and will 'throw a code.' Why change something when it isn't worn out? It would be like replacing perfectly good tires because they aren't the same diameter as new and they throw off the speedometer?:lol:
Back in the day when I worked in a chevy parts store we had an MSD ignition demonstrator. You could open the gap of the demo electrode over 4" and it would still bridge the gap with a mean looking arc!
Here is a great article on platinum plugs....and beyond. http://www.babcox.com/editorial/cm/cm120032.htm